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• java dynamic function calling

  - by dpaksp

  here is that case....i have an String array that contains only method names of yyyyyy.java file in xxxxxx.java file am creaing yyyyyy.java 's instance (say obj) now i have access obj.fuction_name....that function i should get from that String array in loop ...is that possible ... thank u

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• empty sharepoint user profile property throw an exception

  - by James123

  I have a user profile property. user not assigned any value that property. If I use below code. It is thorwing exception " object reference not set to an instance of an object " userprof["OptOut"].ToString() I tried all types like if (userprof["OptOut"] != null) OR if(userprof["OptOut"].Value != null) nothing worked out for me. Here userProf object has value. userprof["OptOut"].Value is null How to handle this?

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• Get color output in bash

  - by Werner

  Hi, when compiling some projects on linux terminal, I get usually a long output consisting of a lot of information. Usually this information is MONOCHROME. I wonder if bash can be modified somehow, so in all outputs or in some specific outputs (like from Makefile, etc) I can get different colors dependeing on, for instance: make[1]: Leaving directory or g++ -DHAVE_CONFIG_H -I. etc. Thanks

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• Question with "extern" in C

  - by why

  When programming, I would like to split one large file(which contains main function) to many small files, so there is one common case: functions in small files can modify the var from main file, so i think extern is very useful! for instance: in main.c extern int i = 100; in small.c extern int i; fprintf(stdout, "var from main file: %d\n", i); I just want to know is my understanding right?

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• Bash: Nth word in a string

  - by Nicolas Raoul

  In bash, I want to get the Nth word of a string. For instance: STRING="one two three four" N=3 Result: "three" What bash command/script could do this? Thank you!

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• How to check if a BOOL is null?

  - by Sheehan Alam

  Is there a way I can check to see if a value is NULL/Nil before assigning it to a BOOL? For example, I have a value in a NSDictionary that can be either TRUE/FALSE/NULL mySTUser.current_user_following = [[results objectForKey:@"current_user_following"]boolValue]; When the value is NULL I get the following error *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSNull boolValue]: unrecognized selector sent to instance I would like to be able to handle the NULL case.

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• Understanding java's native threads and the jvm

  - by Moev4

  I understand that the jvm is itself an application that turns the bytecode of the java executable into native machine code, but when using native threads I have some questions that I just cannot seem to answer. Does every thread create their own instance of the jvm to handle their particular execution? If not then does the jvm have to have some way to schedule which thread it will handle next, if so wouldn't this render the multi-threaded nature of java useless since only one thread can be ran at a time?

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• Using a model to represent the overall state of a view

  - by James P.

  Is there a standard practise for representing the state of a user interface that is not linked to a single Component? For example, a Swing interface could have a series of tabs with a constraint that a single tab should only be displayed once per a given entity type (this could be represented as a HashSet). Or a message could give the result of the last operation carried out. Or a JPanel could be linked to a single entity instance for editing purposes.

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• Class name to view path

  - by Alexey Poimtsev

  Hi, I have a RoR application and model SomeModel. I have views for this model and I want to know - is there any method to get the view's path? Of course I can use for this model instance m = SomeModel.new v = m.class.class_name.pluralize.downcase It's working, but maybe you know a better way? :)

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• R ggplot2: possible to customize the continuity of a time scale?

  - by user275455

  Is it possible to have a datetime scale not consider weekends as part of the time continuum? For instance, if I am plotting stock prices over a 2 week period with a line geometry, I do not want to plot a 2 day period of flattness during the weekend. I would like friday to connect with Monday.

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• log4net - getting appenders specific to only one logger

  - by andreav

  I'm looking for a way to get all appenders attached to one logger instance. I tried: Hierarchy hierarchy = LogManager.GetRepository() as Hierarchy; hierarchy.GetAppenders() as per documentation this returns all appenders for all loggers currently configured. When I try this: LogManager.GetLogger("MyLoggerName").Logger.Repository.GetAppenders(); I get the same result. I would like to retrieve only appenders attached to one logger ("MyLoggerName" in this case) Were am i wrong? Thank you.

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• How do I programmatically disable the update checks for an Ehcache?

  - by Gosta

  I know that the attribute "updateCheck" can be set in "false" in the XMLlike this: xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../config/ehcache.xsd" updateCheck="false" monitoring="autodetect" But I need to do this programmatically. How should I do it?

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• error prepareForSegue between a viewController and a tableViewController

  - by beta

  -(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { if ([segue.identifier isEqualToString:@"My_TableView"]) { MyTableViewController *destViewController = segue.destinationViewController; destViewController.data = data; } } Hi, I have a problem doing a segue (modal) between a ViewController to a TableViewController. The name of the segue between the ViewController and the NavigationController is "My_TableView". Compiler gives me this error: unrecognized selector sent to instance 0x9275b50 what's the problem?

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• How do I use the additional Silverlight Toolkit controls?

  - by Brett Rigby

  I've got VS2010 installed, I've downloaded the Windows Phone add-in and the Silverlight Toolkit from CodePlex, but I cannot work out for the life of me how to actually use the controls in a Windows Phone 7 application... How do I add the controls into the toolbox, or link them so that the XAML doesn't give me errors all the time? For instance, using the Viewbox - the controls aren't implemented, and the XAML does not compile.

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• Pass parameters to Flash Main (Document) class

  - by loto

  In Flash CSn/AS3 you associate a Main class with a flash file which when loaded in the flash player "automatically creates an instance of the program's main class." I'd like to know how to pass arguments to the main class, since you don't write it yourself (you put its name in the Document textfield in the IDE).

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• PHP ORM's, multiple tables and efficiency

  - by sunwukung

  Let's say I have a data mapper function that aggregates multiple tables and generates an object instance from that data. The mapper has a typical save() method which delegates to update/insert. When the mapper executes save - ideally it isolates object fields that have been modified, thus preventing the code from blanket bombing the database. How would you go about this?

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• Using Regex to Split String

  - by Janusz Jasinski

  So I have a string like this (the hashtags are delimiters) A1###B2###C3###12345.jpg I was wondering how would I access A1, B2 and C3 STRING1###STRING2###STRING3###STRING4.jpg SOME###THING###HERE###MEH.jpg EXTRACT###THIS###PLEASE###pah.jpg In one instance I'd like to extract the first string. In another the second, in another the third. I will be using this with Adobe Bridge to extract metadata items from the filename I am looping through each filename so would need Var1 = FirstString Var2 = SecondString Var3 = ThirdString

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• How to get the time on the point that you click on the clock?

  - by Jeff

  For instance, when you click the clock on the screen, there will pop up a notification/dialog which displays the exact time point. Anyone can tell me how to achieve this function? Thanks in advance! Maybe I should explain the "exact time point" . For example, there is a big analog clock on the screen. When you click around the dial, it will pop up a dialog box to display the exact time.

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• How to reference a class that implements certain interface?

  - by vikp

  Hi, I have an interface for logging the exceptions, i.e. IExceptionLogger. This interface has 3 implementations: DBExceptionLogger, XMLExceptionLogger, CSVExceptionLogger. I have an application that will make a use of DBExceptionLogger. The application references only IExceptionLogger. How do I create an instance of DBExceptionLogger within the application. I can't reference the DBExceptionLogger directly since it will break the purpose of having IExceptionLogger interface. Thanks

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• unix process id

  - by swathi

  how to a Write a script that runs a 5 instances of a child process in the background (at a gap of 5 seconds) and do a continuous check to see if any of the child process is completed it starts another instance of the same process till the child process has executed 20 instances.

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• Linq DBML multiple sql servers

  - by Hurricanepkt

  I have an archive system that had to be on two sql databases for simplicity one is Archive2009 and the other Archive2010 they are both on the same sql server and instance and have identical structures however I have a page that needs to view the old one and the new one (I can make two seperate pages) How best would I go about doing this? Dynamically changing the connection string etc?

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• "Subdomain" after my website name

  - by user322600

  Is there a way to create (dinamically) a kind of subdomain that goes between my website domain and the .com? For www.onlinevet.com, for instance, would be something like: www.onlinevet.dog.com www.onlinevet.cat.com

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• Core data fetch only returns unique managed objects

  - by JK

  I execute a core data fetch which specifies a predicate as follows: NSPredicate *predicate = [NSPredicate predicateWithFormat:@"identifier IN %@", favoritesIDs]; When there are duplicate items in the favoriteIDs array, the fetch request only returns 1 managed object. How can I ensure that more than one instance is fetched? Thank you.

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• How does one access this hash from an ActiveRecord class in the Rails console?

  - by randombits

  I have a simple hash I created to make it easier to do dictionary type lookups. For instance: class Numbers < ActiveRecord::Base MY_TYPES { one: => 1, two: => 2 } end Is it not possible in the rails console to access this hash via Numbers.MY_TYPES[:one]?

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• Java library for trees similar to JGraphT for graphs?

  - by lexicore

  I'm a big fan of JGraphT, a Java library for graphs. Could anyone recommend a similar Java library for trees? Preferrably FOSS. What I need is a good API, preferrably typesafe with generics which allows modelling different kinds of trees (with some user data attached to verticies/edges) and run different algorithms and operations on these trees. For instance, traverse or balance. At the moment I'm not interested in visualization of trees.

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